diff --git a/openair1/SCHED_NR/phy_frame_config_nr.c b/openair1/SCHED_NR/phy_frame_config_nr.c
index b050efb2ff..9be6780597 100644
--- a/openair1/SCHED_NR/phy_frame_config_nr.c
+++ b/openair1/SCHED_NR/phy_frame_config_nr.c
@@ -41,7 +41,7 @@
 *
 * OUTPUT:        table of uplink symbol for each slot for 2 frames
 *
-* RETURN :       0 if tdd has been properly configurated
+* RETURN :       nb_periods_per_frame if tdd has been properly configurated
 *                -1 tdd configuration can not be done
 *
 * DESCRIPTION :  generate bit map for uplink symbol for each slot for several frames